Low glycol inks for plain paper printing

Details Low glycol inks for plain paper printing Low glycol inks for plain paper printing

C - Chemistry, Metallurgy

09

D

6/26

C09D 11/00 (2006.01)

Patent

CA 1305297

ABSTRACT OF THE DISCLOSURE An ink composition for printing on plain paper and other media using a thermal ink-jet printer is pro- vided. The ink composition comprises at least one member selected from the group consisting of ethylene glycol and diethylene glycol, present in an amount ranging from about 5 to 10 wt%; dye, ranging from about 1 to 4 wt%; and the balance water. A biocide ranging from about 0.01 to 0.3 wt% and/or a buffering agent ranging in concentration from about 0.05 to 0.5 wt% may also be included. The ink compositions of the invention permit printing on a large variety of plain papers, including bonds, photocopy paper and laser jet paper. These compositions are an improvement over other ink composi- tions and permit both high quality and letter quality printing to be achieved.

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